如果你真的不相信你的肉体会消亡，你为什么还要费心写遗嘱呢？
If you didn't really believe that your body was going to die, why would you ever bother writing a will?
在树木将叶绿素分解，以尽可能多地将其回收的时候，为什么我们还要保护叶绿素呢？
Why protect chlorophyll at a time when the tree is breaking it down to salvage as much of it as possible?
既然您的资历很适合写历史小说，为什么还要写一部设定在未来的小说呢？
Why write a novel set in the future when your credentials are perfect for a historical novel?
如果从食物中获取蛋白质如此容易，为什么在你当地的果汁店还要用粉末、零食棒或强心剂来添加更多呢？
If it's so easy to get your protein in food, why add more in the form of powders, snack bars or a boost at your local juice bar?
如果我们了解自己的想法，为什么还要从我们的行为中揣测自己的偏好呢。
If we knew our own minds, why would we need to guess what our preferences are from our behaviour.
你必须提交你的成绩单，还要写一些文章，例如你为什么想去布朗大学。
You have to submit your test scores, and you have to write some essays, like why you want to go to Brown.
“海蒂，”克拉拉说，“你把罗特麦耶小姐惹得那么生气，为什么还要说喵呢？”
"Heidi," said Clara now, "why do you always say 'meow' again, if you see that Miss Rottenmeier is angry?"
既然你可以驾车，或者更好一点，坐飞机，为什么还要骑几百英里的自行车？
Why ride hundreds of miles on a bicycle when you can drive in a car, or better yet fly in a plane?
当你能够漫步到花园的围墙外进入到广阔的互联网时，为什么还要待在那个封闭的区域里呢？
Why stay within a closed community when you can roam outside its walled garden, into the wilds of the internet proper?
季札的随从不明白他的举动，说道：“先生，徐王已经去世了。你为什么还要把剑送给他？”
Ji Zha's attendants didn't understand his action, saying, "Sir, the king of Xu is already dead. Why do you still give up your sword to him?"
如果你知道你的电脑会储存信息，为什么你还要把它储存在你自己的个人记忆里，你的大脑里？
If you know your computer will store information, why do you store it in your own personal memory, your brain?
这位年轻的钢琴家说：“如果输了，就仔细想想为什么输；如果赢了，就更加努力。我还要多加练习提高水平，通过钢琴将古典音乐真正的美展现出来。”
"If you lose, think carefully about it, and if you win, just work harder," the young pianist said, "I still need to practise more to become better, to bring out the real beauty of classical music through the piano."
一天，卖供猫食用的肉的商贩对他说：“你为什么不停止为人类看病，转而为动物看病呢？我相信你对动物的了解比大多数兽医还要多。你写了一本关于猫的好书。我会把所有带着生病的猫狗的人都送到你这里来。”
One day, the cat's-meat-man said to him, "Why don't you stop being a doctor for people and become a doctor for animals instead? I'm sure that you know a lot about animals-more than most vets. You wrote a wonderful book about cats. I'd send all the people with sick dogs or cats to you."
由于迁移早已包含了列，为什么还要在模型类中再次将它们列出来呢？
Because the migration already contains the columns, why should you list them again in the model class?
但他生活在沙漠地区——如果他这么在意水资源，为什么还要建游泳池？
But he lives in a desert - if he is concerned about water, why have a pool at all?
如果你可以通过及时消息更快地得到答案，为什么还要等待电子邮件回复呢？
Why wait for a response to an email when you get a quicker answer over instant messaging?
此时，您可能正纳闷，为什么我还要讨论内存管理、别名和对象所有权。
At this point, you're probably wondering why I'm even talking about memory management, aliases, and object ownership.
为什么当你可以在网站得到最新的新闻时还要去买报纸？
Why buy newspapers when you can get up-to-the-minute news on the web?
但为什么你还要遵守每年扣除500美元的费用规定呢？
如果你说“为什么今天我还要去工作”这会如何影响你的态度。
If you say, "why do I have Togo to work today," how's that going to affect your attitude?
您可能想知道为什么JSF框架中的组件可用时还要这样做。
You might wonder why to do this if the component is already available in the JSF framework.
他表示：“当在办公室里能就餐、做运动和玩乐，为什么还要回家呢？”
Why would you go home when you can have meals, take exercise and enjoy fun in the office?
如果你说“为什么今天我还要去工作”，这会如何影响你的态度。
If you say, "Why do I have to go to work today?" how is that going to affect your attitude?
只是如果投资者期望复苏强劲，为什么还要接受这样微薄的收益呢？
But why would investors accept meagre yields if they expected a vigorous recovery?
能租了碟，看完后装在信封里寄回为什么还要买DVD ？
Why buy a DVD when you can watch it and return it in a convenient envelope?
为什么你们已经不是新生了还要来,怎么来说呢？
So why did you come those of you who are not freshmen Oh, you--Why did you come?
为什么你们已经不是新生了还要来,怎么来说呢？
So why did you come those of you who are not freshmen Oh, you--Why did you come?
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